"No further action will be necessary from this office. Bottom line: No criminal action will be brought," Orenstein said.

Orenstein said he discussed the issue this week with Fire Chief John A. Pond and two weeks ago with Police Chief James M. Neiswanger. As a result of those conversations and employees' resignations, the state investigation has concluded in a case that involved suboxone, a medication approved for opiate addiction, and calls for increased drug testing of public safety personnel.

Bauer began as a firefighter June 11, 2007 and his yearly salary was $49,336, Personnel Administrator Robert Judge said.

Girard was hired as a patrolman Feb. 1, 2009 and his yearly salary was $50,350, Judge said.

Pond and Neiswanger said recently, before Orenstein's remarks to The Republican and MassLive.com, that internal investigations in their respective departments were ongoing related to the case.

Pond and Neiswanger didn't respond to messages seeking comment about Orenstein saying the investigation was closed.

At a June 2 press conference in his office, Mayor Alex B. Morse said city officials learned of the state police investigation "into a limited number of public employees" on May 28.

State police had been staking out a man in relation to drug dealing. Upon stopping him May 28, they learned he was en route to make a delivery to a firefighter here "who suffered from a prescription pill addiction," Neiswanger said at the press conference.

State police contacted city police and the Fire Department "command structure" then was notified. The man who had been stopped proceeded to meet with the firefighter and police then questioned the firefighter, he said.

"The firefighter ... invoked his right to remain silent," Neiswanger said.

Fire Department officials sent the firefighter home, he said.

Neiswanger said he spoke the next day with the police officer, placed him on paid leave and confiscated his department-issued gun. The officer resigned June 2.

Neiswanger had ordered the officer to go to the Work Connection medical services facility at Holyoke Medical Center for a drug test Friday and the officer refused, he said.

At the June 2 press conference, Morse said he would pursue drug testing of all police and firefighters. That will include both an immediate testing of all employees and establishment of a recurring testing policy, said Rory Casey, Morse chief of staff.

"We have a zero-tolerance for drug use by first-responders like police and firefighters in the city of Holyoke," Morse said then.

Morse reiterated that view Thursday, saying, "Drug testing will still be pursued in both departments."

In the Police Department, Neiswanger said an officer can be ordered to undergo a drug test based on reasonable suspicion. He defined that as an employee showing behavior such as unusual physical mannerisms, including falling down, odd work performance and the employee's own admission, he said.

If the department drug-tests one officer randomly, Neiswanger said, the contract requires that the department then test all officers randomly.

The contract between Holyoke Fire Fighters Association, Local 1693, International Association of Fire Fighters, and the city permits the city to order a drug test if a firefighter comes under reasonable suspicion. The mayor cannot proceed beyond that without the union's consent, union lawyer Terence E. Coles has said.

Patrol union president Edward J. Moskal said Tuesday the city had yet to contact the union, Local 388, International Brotherhood of Police Officers, about expanding drug testing.

"I don't believe there is a problem," Moskal said.

Firefighters union president Christopher Butler said Wednesday, "We have a comprehensive drug policy and we've had preliminary conversations with the city about changing the policy and it would be a matter to be negotiated."